That is one aspect where I will admit that digital books have an enormous advantage over physical. The ability to easily search up definitions, pronunciations, and etc. within the app itself makes it so that the disruption to the flow of read--whilst still there--is considerably less so than even searching for it on my phone with a physical book. So I can understand not wanting to part with those luxuries.It's nice to be able to save my highlights and notes digitally, and to tap on a word or phrase to see the definition, reference, or photo.